The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2016
Filed:
Feb. 22, 2011
Hao-ping Hong, Hsinchu County, TW;
Shang-ping Chen, Tai-Chung, TW;
Ding-shiuan Shen, Chiayi County, TW;
Hao-Ping Hong, Hsinchu County, TW;
Shang-Ping Chen, Tai-Chung, TW;
Ding-Shiuan Shen, Chiayi County, TW;
MEDIATEK INC., Science-Based Industrial Park, Hsin-Chu, TW;
Abstract
A universal serial bus device includes: a core circuit having a first pin and a second pin, and having an input impedance looking into the core circuit from the first pin and the second pin; and a charging control circuit, coupled to the core circuit, arranged for providing a voltage source having a predetermined voltage to one of the first pin and the second pin and for providing a current source having a predetermined current to the other of the first pin and the second pin; wherein the input impedance of the core circuit is configured to make the predetermined voltage and the predetermined current substantially intact when an external charger charges a battery device of the universal serial bus device.